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

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

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: -1/2; y-intercept: 1

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

C. 4/5

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

1. Line WZ has the same slope as line XY. 3. Line XW has a lesser slope than line YZ. 4. Line ZW has the same y-intercept as line YZ.

Which equation represents the graphed function?

D. y=-1/3x+3

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?

Graph 4

Which graph represents a line with a slope of -2/3 and a y-intercept equal to that of the line y=2/3x-2

Graph One