Question

Help PLEASE!! This is my last question of this QUIZ THAN I'LL BE FREE!! 20 pts!!!!

Answer 1

Answer:

y=0.012x+0.65

Step-by-step explanation:

And again y=mx+c  

we have 4 point given in the question

(50,1.25) ( 100,1.85) ( 150,2.45) (200,3.05)

we can find the M ( gradient/Slope) by using 2 of them with the formula

I am using the first 2 (50,1.25) ( 100,1.85)

$\frac{y2-y1}{x2-x1}$

$\frac{1.85-1.25}{100-50} \\\frac{0.6}{50}$

which in decimal form is 0.012

with that cross out the first option as its wrong

now to find c, like in the previous two question, put the m, x and y in the equation and solve for C

I am gonna use the 3rd coordinates for this one (150,2.45)

2.45=0.012(150)+c

2.45=1.8+c

0=1.8-2.45+c

-c=-0.65

c=0.65

So our completed equation is y=0.012x+0.65

The third answer is correct :)

Answer 2

Answer:

y=0.012x+0.65