-x+4y=8: Parallel
4x+y=-1: Perpendicular
y=-1/4x+6: neither
y=-4x-3: Perpendicular
The answer to the expression would be 3.
First substitute the values of r and s into the expression.
24-r×s
24-3×7
Then using the rules of pemdas, you would start to solve this by completing the multiplication, then the subtraction.
24-21
3
The answer is B the lowest y term is -6 and the highest is 9 therefore the answer is B
For the first Q the answer is the first square on the left 10 miles divided by 12 hours = 0,83 miles
And the second Q goes with the last square 12 hours divided by 10 miles = 1.2 h which in minutes is 72 minutes or 1h and 12 minutes.