PRACTICE Quiz on Linear Equations

What does "m" represent in y=mx+b?

• y-intercept
• slope
• macaroni
• nothing

What does "b" represent in y=mx+b?

• y-intercept

• slope

• macaroni

• nothing

What is the slope of the line with the equation
 $y\ =\ -\frac{3}{2}x\ +\ 4$  

•  $-\frac{3}{2}$  

•  $\frac{3}{2}$  

•  $4$  

•  $-4$  

What is the y-intercept of the line with the equation
 $y\ =\ -2x\ +\ 4$  

•  $-2$  

•  $2$  

•  $4$  

•  $-4$  

Write the equation of the line.

• y = -1/3x - 2

• y = 1/3x - 2
• y = 3x - 2
• y = -3x - 2

Answer explanation

The slope is positive. Starting with the point on the left, rise is 1 and run is 3.

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Answer explanation

Match the slope... or find the x-intercept to get the correct graph quickly.

Are these two lines parallel, perpendicular or neither?

y = -1/4 x - 5

y = 4x + 2

• Parallel

• Perpendicular

• Neither

Convert this equation into slope-intercept form: 3x + y = 12

• y = -3x +12
• x = y + 4
• x = y + 12
• y = 3x -12

Convert this equation into slope-intercept form. x + y = 4

• y = x + 4
• y = -x + 4
• x = -y + 4
• x= y - 4

• y = 2x - 6

• y = -2x + 6

• y = -10x + 30

• y = 10x - 30