Answer and explain these 3 questions. you!

QUESTION 1

We want to find the equation of the straight line that passes through the point

and has slope


We use the point slope formula



to obtain,



We multiply through by 10 to get,



We expand bracket to get,



We group the constants on the right hand side to get,



we simplify to get,



Divide through by 2,



or



The correct answer is H.

QUESTION 2

We want to find the equation of a line that passes through

with slope


We apply the point slope formula



to obtain,







The correct answer is J.

QUESTION 3

We want to find the equation of the straight line that passes through,



and has slope



We apply the point-slope formula



to obtain,



Let us multiply through by 4 to get,


We group the constant terms on the right hand side to obtain,



This simplifies to,



We multiply through by -1 to get,



The correct answer is A.

1. 0.3 •4 is the same as 4 groups of 0.32. 7•0.8 is the same as 7 groups of 0.83. it increases by 0.5 every time, so 0.5x4 it increases by 0.9 every time, so 0.9x5. 0.9•12=10.86. 0.47•5=2.35i can finish the next ones in a separate post