Alg 1 Final Review Ch. 3 & 4

Linear Equations

100

Solve for y.

x+y=7

y=-x+7

200

4x+2y=9

y=-2x+9/2

300

Determine which of the two points lies on the graph of the line.

2x+y=10

(4,3)      (-4,18)

(-4,18)

400

Determine which of the two points lies on the graph of the line.

x-3y=12

(6,-2)       (9,1)

(6,-2)

500

Determine which of the two points lies on the graph of the line.

2y-x=9

(5,1)   (1,5)

(1,5)

Intercepts

100

Find the y-intercept.

x+y=-7

y-intercept = -7

200

Find the y-intercept.

x-y=11

y-intercept= -11

300

Find the y-intercept.

y-x=2

y-intercept= 2

400

Find the y-intercept.

x+4y=24

y-intercept=6

500

Find the y-intercept.

6x-y=7

y-intercept= -7

Slope and Rate of Change

100

Find the slope.

(0,4) and (3,7)

m=1

200

Find the slope.

(2,5) and (3,0)

m= -5

300

Find the slope.

(1,2) and (2,5)

m= 3

400

Find the slope.

(4,-8) and (-3,6)

m= -2

500

Find the slope.

(4,1) and (3,7)

m= -6

Slope-Intercept Form

100

Identify the Slope and Y-intercept of the line with the given equation.

y=3x+4

Slope= 3

y-intercept=4

200

Identify the Slope and Y-intercept of the line with the given equation.

y=5x-2

Slope= 5

Y-intercept= -2

300

Identify the Slope and Y-intercept of the line with the given equation.

y=-2x+8

Slope= -2

y-intercept=8

400

Identify the Slope and Y-intercept of the line with the given equation.

y=1/2x

Slope= 1/2

y-intercept= 0

500

Identify the Slope and Y-intercept of the line with the given equation.

y=-3/4x-1

Slope= -3/4

y-intercept= -1

Write equations in Slope-Intercept form

100

Write an equation.

(0,8); m= 3

y=3x+8

200

Write an equation.

(5,1); m= 4

y=4x-19

300

Write an equation.

(-4,3); m= 2

y=2x+11

400

Write an equation.

(6,-1); m= 9

y=9x-55

500

Write an equation.

(3,4); m= 1/2

y=1/2+5/2