A) Substitution
substitute y = 5x-2 for y in the first equation and solve for x:
5x-2 = 7x-8 subtract 7x from both sides
-2x-2 = -8 now add 2 to both sides
-2x = -8 + 2 simplify
-2x = -6 divide both sides by -2
x=3
Now substitute x with 3 in either equation
y=5x-2 =5*3-2 =13
(3,13)
B) (3,13) is the point where the two lines intersect
y=mx+b is the equation of a line
Answer:
the lines of the graph are perpendicular.
Answer:
There's no picture attached
Step-by-step explanation:
What really helps is looking at it like a positive and negative number line. Adding a negative is the same as subtracting a positive, and visa versa. The quotient is 5.8
So as 22/7 is already a fraction we can write pi which is 3.14 to the same base as well!
so right now pi is 3.14/1 that's just 3.14.
we can multiply that 3.14 by 7 so the denominator will be 7 like the other number which helps us compare.
so 3.14*7 is 21.98
now that number is over 7
compare: 21.98/7 and 22/7 now we can see pi which is 3.14 is smaller and closer to pi