Slope-Intercept Form of a Line Quiz

What is the slope of the line represented by the equation y = -1/2x + 1/4

a. -1/2

What is the slope of the line represented by the equation y = -2/3 - 5x?

a. -5

Harita must memorize 90 measures of music for her cello solo at a concert. She plans on memorizing 18 new measures for every 3 days of practice. Which equation can be used to determine m, the number of measures Harita still needs to memorize, as a function of d, the number of days of practice since she began learning the piece?

b. m = 90 - 6d

What are the slope and y-intercept of the linear function graphed to the left?

b. slope: ; y-intercept: 1

Nolan plots the y-intercept of a line at (0, 3) on the y-axis. He uses a slope of 2 to graph another point. He draws a line through the two points. Which equation represents Nolan's line?

b. y = 2x + 3

A circle representing a pool is graphed with a center at the origin. Grant enters the pool at point A and swims over to a friend who is located at point B. Which equation represents Grant's path?

b. y = 4 -x/2

What is the y-intercept of the function f(x) = - 2/9x + 1/3?

c. 1/3

The profit earned by a hot dog stand is a linear function of the number of hot dogs sold. It costs the owner $48 dollars each morning for the day's supply of hot dogs, buns and mustard, but he earns $2 profit for each hot dog sold. Which equation represents y, the profit earned by the hot dog stand for x hot dogs sold?

c. y=2x−48

A leaf hangs from a branch 12 feet in the air. It falls to the ground at a rate of 0.25 feet per second. Which graph could represent the leaf's height in feet as a function of time, in seconds, after leaving the branch?

d.

Which graph represents a line with a slope of and a y-intercept equal to that of the line y = x - 2?

d.

Four lines are drawn on a coordinate plane to form trapezoid WXYZ. Which statements are true about the lines? Select three options.

a. Line WZ has the same slope as line XY. c. Line XW has a lesser slope than line YZ. d. Line ZW has the same y-intercept as line YZ.

What is the y-intercept of the function f(x) = -x + ?

c. 1/3

What is the slope of the line represented by the equation y = 4/5 x - 3?

c. 4/5

The graph represents revenue in dollars as a function of greeting cards sold. Which equation represents the function shown on the graph?

e. y = 4x

Which equation represents the graphed function?

y = -1/3x + 3