3y + z 3. Given that I =
find
y - z
(a) the value of x when y = 7 and 2 = 2,
(b) the value of z when x = 4 and y = 9​

a

Step-by-step explanation:

(a) the value of x when y = 7 and 2 = 2,

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

i'm sorry mate, but i am not seeing any figures. i am unable to solve this for you.