Step-by-step explanation:
when multiplied together, the gradients of the 2 graphs should equal -1 (of they are perpendicular).
x-7y=4
-7y= -x + 4
y= -1/7 x + 4/7
21x+ 3y=11
3y=-21x+11
y=-21/3 x + 11/3
-21/3 * -1/7 = 1
when multipled together, the 2 gradients dont equal -1 therefore they are not perpendicular
unless I've made a mistake with the signs at some point haha
The answer is C
Step by step :-
here
x=3
y=4
so,
-2×3+6×4=18
or,-6+24=18
6 4 0. says sister (big sister in highschool)
so if she gets it wrong i will help you out,without my sister answering......
I don't understand what you mean
Answer:
20 + (x/14)
Step-by-step explanation:
a number means a variable, increased means add and quotient is division.
