What is the equation of the line in slope intercept form

7x+8y=-18, 4x-9y=-3 solve the system of equations

The annual snowfall in a town has a mean of 38 inches and a standard deviation of 10 inches. last year there were 63 inches of snow. find the number of standard deviations from the mean that is, rounded to two decimal places. 0.44 standard deviations below the mean 2.50 standard deviations below the mean 0.44 standard deviations above the mean 2.50 standard deviations above the mean

How do the definitions, properties, and postulates you've learned about line segments, parallel lines, and angles to define the shapes of polygons