Question 810250
Well the formula for a linear equation is y=ax+b where a is your slope, x is any number you plug in (x coordinate) , and b is your y intercept 
Here in y=5x+7 
Your y int is positive 7 (you can also just plug in zero for x and you also het 7) the cordinate will be (0,7)

Your x intercept you must cahnge y to zero and solve for x : so 0= 5x+7  -7=5x.     -7/5=x  that will be you x-intercept so the cordinate will be ( -7/5 , 0)