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Math 8A
EXTRA PRACTICE ON TOPIC 4 - EQUATIONS AND INEQUALITIES
1) Graph each equation on the grid
to the right. Be sure to change
each equation into the y = mx + b
form. State the slope and y
intercept for each.
a) y = -3x + 4
b) y - 2x = 8
c) 8y + 2x = -24
2) a) Solve for n:
4k + mn = n - 3
3) The formula for the area of a trapezoid is
A = 1/2h(b1 + b2)
a) Express b1 in terms of A, h, and b2.
b) Solve for m:
-3(m - 2n) = 5m
b) The area of a trapezoid is 60 square feet, its
height is 6 ft, and one base is 12 ft. Find the
number of feet in the other base.
4) Solve and graph:
y > -2x + 4
Select one point in the solution set.
___________
Check this point.
5) Solve and graph:
-2y + x ≤ -10
Select one point in the solution set.
___________
Check this point.
6) Solve the inequality below to determine and state the smallest possible value for x in
the solution set.
3(x + 3) ≤ 5x - 3