Solve using graphical method
2x + 5y = 20
y = 7
solve using the substitution method.
a) y = 3x + 1
x + 2y = 16
b) y = 2x + 7
3y - 4x = 11
c) 2x + 5y = 6
y = 3 / 2x + 5
d) y = -x
y = 8x + 21
e) y = 3x - 11
y = 5x + 17
f) y = 4x - 17
y = 6x - 22
solve using the elimination method.
a) 3x - 7y = -2
-2x - 7y = 13
b) 5x + 2y = 6
4x + 3y = 2

It takes a total of 6 hours to fill up an inground backyard pool using a standard house. a function can represent this situation to represent the amount of water in the pool until it is full a function of time the hose is running. determine the domain for the function

Which mathematical statements are true? 1) if 3 is an odd number, then 3 times 3 is an even number. 2) if 6 is less than 7, then 4 is greater than 7. 3) six is divisible by 3, and 10 is a multiple of 2. 4) the average of the data is greater than the largest value in the data, or it’s less than the largest value in the data. 5) the slope of a linear graph is its rate of change, and the graph’s y-intercept is the initial value. 6) if an equilateral triangle has equal angles, then all its angles will measure 45°.

In the diagram of circle a what is m