Explain what a vertical line test is and how it is used

a vertical line test is where you check and see if your line passes the same point twice. generally you check and see if your points have the same x coordinates, or go back on your x coordinates.

Step-by-step explanation:

Vertical line test to check whether relation is a function

Used by drawing a vertical line on the graph

Step-by-step explanation:

Vertical line test is a test used to check whether the graph of any relation is a function or not.

In vertical line test, a vertical line will be drawn on the graph and see whether the line meets the graph at two or more points.

When a vertical line crosses the graph at two or more points then it is not a function.

correct answer is infinitely many solutions

step-by-step explanation:

2(2x + 3) = -4 + 2(2x + 5)

solving the above equation:

4x + 6 = -4 +4x +10

combining like terms

4x -4x = -4+10-6

0=0

since both sides are 0=0, we end up into true statement it means it has infinite many solutions.

so correct answer is infinitely many solutions

walter needs to make at least 5 more cookies but no more than 40. 5 ≤ x ≤ 40

step-by-step explanation:

20 ≤ x + 15 ≤ 55

subtract 15 from all parts

20-15 ≤ x + 15-15 ≤ 55-15

5 ≤ x ≤ 40

this means how many more cookies he has to make

walter needs to make at least 5 more cookies, but no more than 40 cookies; 5 ≤ x ≤ 40