The rate at which a plant grows is constant. at the 3rd week it is 12 inches tall and at the 5th week it is 20 inches tall. if this information is plotted on a coordinate plane, what is the y-coordinate of the the point (1, y)?

The constant rate at which the plant grows is the slope of the coordinate plane.

The y-coordinate of the point (1,y) is 4

The ordered pair from the question can be represented as:

The slope is calculated as:

So, we have:

Also, the slope is:

Equate both values of slope

Multiply both sides by 4

Collect like terms

Hence, the y-coordinate of the point (1,y) is 4

Read more about slopes at:

link

answer: b

step-by-step explanation:

your answer would be 10x - 1