Can someone me fast.

y= 3x + 2 is the equation of a straight line graph. where does it cross the y-axis? also can you tell me how to work it out?

The equation is a straight line on the graph because it is in slope-intercept form. (y=mx+b) It crosses the x-axis at (0,2) since if you substitute 0 for x, it comes out as 2. (3*0=0, 0+2) The y-intercept is the y-value when x is 0.

the law of definite proportions states samples of a compound will always contain the same proportion of elements by mass. in other words, a given compound will always contain the same elements in the same proportions by mass.the law of multiple proportions states when two elements combine with each other to form more than one compound, then the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.