2021 Fall Semester Exam 4

Find the value of x so that the function has the given value.

n (x) = x + 15; n(x) = 7

• 8

• 22

• -22

• -8

Which of the following is the formula used to calculate the slope of a line?

Write the compound inequality that represents the amounts of money a student can bring.

Solve the equation. Determine whether the equation has one solution, no solution, or infinitely many solutions.

12(-2w - 9) = -2(12w +54)

• w= 1,

  one solution

• infinitely many solutions

• w = 0; one solution

• no solution

If the system of equations has ONE SOLUTION, what does the graph look like?

• intersecting lines

• parallel lines

• dotted line

• same line

Write the sentence as an inequality:

A number b times -2 is more than 11 1/3.

Write an equation in slope-intercept form of the line shown on the graph.

• y = x +2

• y = x -2

• y = -x +2

• y = -x -2

Graph the linear function f(x) = 3 - 4x

• 
• 
• 
• 

Solve the equation:

2x -1 = 4x + 5

• x = -1

• x = 1

• x= -3

• x = 3

What mistake did Ben make rewriting the literal equation?

• Ben did not make a mistake.

• In Step 1, Ben should have added 2w.

• In Step 2, Ben should have divided the entire express P - 2w by 2