SM1111 PLS help these are the only 4 QUESTIONS LEFT pls HELP THESE ARE MY ONLY POINTS

question 8 is   1=x

question 9 is    h≤5

question 10 is   x= -6

question 7 is 43.75

Step-by-step explanation:

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c