Question

Math question please help

Answer 1

Answer:

3

Step-by-step explanation:

Answer 2

Answer:

3

Step-by-step explanation:

Hello There!

First things first, we should find the rate of change / slope

given two points we can find the slope by using the slope formula which is

(let m be slope)

$m = \frac{y_2-y_2}{x_2-x_2}$

To find the slope all we have to do is plug in the points

(1,5),(2,10)

remember the first numbers in an ordered pair are the x values and the second numbers are the y values

we also plug in the points of the second ordered pair first so

$m=\frac{10-5}{2-1} \\10-5=5\\2-1=1\\m=\frac{5}{1} or5$

Knowing the slope we can create an equation to find the x value (a)

y=5x

given the y value we plug in y and solve for x

15=5x

divide each side by 5

15/5=3

5x/5=x

we're left with

x=3

so we can conclude when y =15 x = 3 therefore 3 is your answer