Y = mx + b, where m = slope, and b = y-intercept.
Since you are not given the y-intercept, you have to solve for it through the equation, y = -3x (which is the slope you are given) + b, and replace x and y with values given, which are (1,4)
y = -3x + b
4 = -3(1) + b
4 = -3 + b
7 = b
Then replace b in the first equation to get the answer
y = -3x + 7
Answer:
59 °F
Step-by-step explanation:
Put the given number in the formula and do the arithmetic.
F = (9/5)(15) +32 = 27 +32 = 59
The temperature in degrees Fahrenheit is 59.
Answer:
The run is -7.
Step-by-step explanation:
Since we know that slope = rise/run, we can calculate the run by inputting the given numbers.
So,
-3 = 21/x and we need to solve for x.
When we cross multiply we get -3x=21.
Then, divide -3 on both sides and x = -7
