Math

The cost of nails varies directly with the number of pounds bought. If 4 pounds of nails cost $11.60, what is the cost of 3.5 pounds?

$10.15

What is the constant rate of change between the two quantities in the table? Time (x) | 15 | 30 | 45 | 60 | Number of Pages Read (y) | 10 | 20 | 30 | 40 | F. 30/15 G. 15/1 H. 2/3 I. 1/3

+5 +15 +15 Time (x) | 15 | 30 | 45 | 60 | Number of Pages Read (y) | 10 | 20 | 30 | 40 | +10 +10 +10 5/10 15/10 15/10 to 10/5 10/15 10/15 of 5/5 5/5 5/5 = 2/1 2/3 2/3 most H. 2/3

What is the slope of the line that passes through the points E (-1, 4) and F (2, 6)? A. - 3/2 B. - 2/3 C. 2/3 D. 3/2

2 divided by 1 = 2 6 divided by 4 = 3 C. 2/3

If printer can print 36 pages in 3 minutes, how many pages can it print in 8 minutes?

36 divided by 3 = 12 times 8 = 96 Pages

What is the slope (grade) of a road that rises 6 feet for every horizontal change of 100 feet?

6ft./100ft. of 2/2 = 3/50ft.

At store A, pencils are sold individually. The cost y of x pencils is represented by the equation y = 0.55x. The costs of pencils at store B are shown in the table. Number of Pencils (x) | 6 | 12 | 18 | 24 | Cost (y) | $3.06 | $6.12 | $9.18 | $12.24 | Which of the following statements is true? F. The pencils at store A cost more. G. The pencils at store A $0.27 each. H. The pencils at store B $0.30 each. I. The pencils at store B cost more.

A: $0.55 B: $0.51 F. The pencils at store A cost more.

The profits from selling T-shirts at store A are shown in the graph. The profit y for selling x T-shirts at store B is represented by the equation y = 3.75x. Which of the following statements is true? F. G. H. I.

A: $4 per shirt \ B: 3.75

What are the slope and y-intercept for the graph of y = 4x - 2? A. slope: -4, y-intercept: -2 B. slope: 4, y-intercept: -2 C. slope: -4, y-intercept: 2 D. slope: 4, y-intercept: 2

B. slope: 4, y-intercept: -2

What is the constant rate of change between x and y in the table below? | x | -3 | -1 | 1 | 3 | | y | 7 | 4 | 1 | -2 | A. 3/2 B. 2/3 c. -2/3 D. -3/2

D. -3/2

What is the slope of the line that passes through the points C(-2, 4) and D(1, -1)? F. -5/3 G. -3/5 H. 3/5 I. 5/3

F. -5/3

What is the equation in slop-intercept form for the graph shown? F. y + x = -3 H. y - 3x = 1 G. y = 3x + 1 I. y = -3x + 1

USE GRAPH: I. y = -3x + 1

Theo is renting two kinds of tables for his party. One type of table seats 4 people and the other seats 6 people. If 36 people will be at his party and he rents 7 tables, how many of each type of table does he rent?

___| 4P | 6P 7 | 5 | 2 | 4 | 3 | 3 | 4 choose last one 3 - 4p ------- 4 - 6p

What are the x- and y-intercepts for the graph of -3x + 5y = -15? x-int (y = 0) y-int (x = 0)

switch -3x to y = -3 and 5y to x = 5 x = 5 y = -3

Geneva is saving for a new dress. She already has $20 saved and intends to save $7 each week. The equation for the amount of money y she has saved id y = 7x + 20, where x is the number of weeks. What do the slope and y-intercept represent?

x = 7 y = 20

What is the equation in slope-intercept form for the line that passes through the points (-2, -1) and (1, 5)? A. y = 2x - 3 C. y = -2x - 3 B. y = 2x + 3 D. y = -2x + 3 slope = __ Then use y - y, m (x -x,)

y - 5 = 2 (x - 1) y - 5 = 2x - 2 + 5 + 5 y = 2x + 3 B. y = 2x + 3 slope = B. Then use y - y, m (x -x,)