System of Equations
By: Carter Colclasure
2x+7y=14 First I changed both equations into slope intercept form then I graphed
5x+7y=-7 them. The interception point was (-7,4) .
Writing a System
You pay $24.50 for 10 gallons of gasoline and 1 quart of oil at the gas station. Your friend pays $22 for 8 gallons of the same gasoline and and 2 quarts of oil. Find the cost of 1 quart of oil.