1.) which functions are linear? i. y=x^2ii. y=-x^2iii. y=2x+1iv. y=-1/3x+122.) what is the x-intercept of the equation shown below? y=3x+5a.) (0,5)b.) (-5/3,0)c.) (3,0)d.) (0,-3/5)3.) which of the following is a function? i. x^2+y^2=1ii. y=x^2iii. y=4x-10iv. 1/2y=3x