Equations from a Straight Line

Which equation matches the graph?

• y = 7x

• y = 42x

• y = 6x

• y = 2x

If you selected point (0,9) and m = -3/4 what substitution is correct to solve for b?

• 0 = -3/4 (9) + b

• 9= 3/4 (0) + b

• 9 = -3/4(0) + b

• y = mx + b

• slope

• y-intercept

Write the equation of a line in slope-intercept form with a slope of 2 and a y-intercept of (0, -4).

What is the y-intercept in the equation y=4x+2

Which of the following equations has as its graph a line with slope 4?

• 4y+x=7

• 4x+y=7

• 4y=x+7

• none of the other responses is correct

• 4x=y+7

The equation y = 3x + 5 has _____

• A unique solution 

• Only two solutions

• Three solutions 

• Infinitely many solutions 

If (2 ,0) is a solution of the linear equation 2x + 3y = k, then the value of k is_____

• 4

• 5

• 6

• 2

The graph of the linear equation 2x + 3y = 6 cuts the y - axis at the point _____

• (2 ,0)

• (0 ,3)

• (3 ,0)

• (0, 2)

The equation x = 7 in two variables can be written as ____

•  x + 1 .y = 7

• x + 0.y = 7

• 0.x + 1. y = 7

• 0.x + 0.y = 7