4. Yes because a function is a expression, rule, or law that defines a relationship between one variable and another variable which is what is happening in this image
5. Yes the slope is shown on the graph because it shows the measure of its steepness which can be determined by simply looking at the image
Therefore he can't pour all the water into the vase because the amount of water is 120cm³ whilst the vase is 80. An amount of water as that can't fill the vase
